Github user shinrich commented on a diff in the pull request:
https://github.com/apache/trafficserver/pull/761#discussion_r68877289
--- Diff: doc/admin-guide/files/records.config.en.rst ---
@@ -643,6 +644,8 @@ tr-out
tr-pass
Transparent pass through. This option is useful only for inbound
transparent proxy ports. If the parsing of the expected HTTP header fails, then
the transaction is switched to a blind tunnel instead of generating an error
response to the client. It effectively enables
:ts:cv:`proxy.config.http.use_client_target_addr` for the transaction as there
is no other place to obtain the origin server address.
+no-throttle
--- End diff --
The idea is you want to have a port open for critical communications like
health checks and other cross ATS communication. I updated the documentation
to at least put in a basic description. I can expand on that as needed.
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